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Refactor servingNetworkName

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This commit is contained in:
Guido Casati
2025-01-31 16:05:54 +01:00
parent d6e2bf1651
commit 529b142d75
1 changed files with 15 additions and 8 deletions
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openair3/NAS/NR_UE/nr_nas_msg.c
+15 -8
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@@ -91,19 +91,26 @@ static fgmm_msg_header_t set_mm_header(fgs_nas_msg_t type, Security_header_t sec
return mm_header;
}
static void servingNetworkName(uint8_t *msg, char *imsiStr, int nmc_size)
static void servingNetworkName(uint8_t *msg, char *imsiStr, int mnc_size)
{
// SNN-network-identifier in TS 24.501
// TS 24.501: If the MNC of the serving PLMN has two digits, then a zero is added at the beginning.
const char *format = "5G:mnc000.mcc000.3gppnetwork.org";
memcpy(msg, format, strlen(format));
if (nmc_size == 2)
memcpy(msg + 7, imsiStr + 3, 2);
else
memcpy(msg + 6, imsiStr + 3, 3);
// MNC
char mnc[4];
if (mnc_size == 2) {
snprintf(mnc, sizeof(mnc), "0%c%c", imsiStr[3], imsiStr[4]);
} else {
snprintf(mnc, sizeof(mnc), "%c%c%c", imsiStr[3], imsiStr[4], imsiStr[5]);
}
memcpy(msg + 13, imsiStr, 3);
// MCC
char mcc[4];
snprintf(mcc, sizeof(mcc), "%c%c%c", imsiStr[0], imsiStr[1], imsiStr[2]);
int size = 64;
snprintf((char *)msg, size, "5G:mnc%3s.mcc%3s.3gppnetwork.org", mnc, mcc);
}
static security_state_t nas_security_rx_process(nr_ue_nas_t *nas, uint8_t *pdu_buffer, int pdu_length)